A vertical rectangular section of a dam has width and extends from the water surface…

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A vertical rectangular section of a dam has width

5.0\,\text{m}

and extends from the water surface down to a depth of

10\,\text{m}

. Air acts on both sides, so only the water exerts a net horizontal force on the wall. What is the magnitude of this force? (Assume water density is

1000\,\text{kg}\!/\!\text{m}^3

and

g=9.8\,\text{m}\!/\!\text{s}^2

.) (a)

4.9\times10^{6}\,\text{N}

(b)

4.9\times10^{5}\,\text{N}

(c)

2.5\times10^{6}\,\text{N}

(d)

1.2\times10^{6}\,\text{N}